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Finding the Fourth Proportional to 356,666.41, 535,069.55 and 132,028.57

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Solution

The fourth proportional to 356,666.41, 535,069.55 and 132,028.57 is: 198,068.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,666.41 : 535,069.55 = 132,028.57 : x
  2. Step 2: Convert to fraction form
    356,666.41/535,069.55 = 132,028.57/x
  3. Step 3: Cross multiply
    356,666.41x = 535,069.55 × 132,028.57
  4. Step 4: Simplify right side
    356,666.41x = 70,644,467,537.04
  5. Step 5: Solve for x
    x = 70,644,467,537.04/356,666.41
  6. Step 6: Final answer
    x = 198,068.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.